CN104214147B - A kind of shield propulsion hydraulic system sudden change load energy absorption device - Google Patents
A kind of shield propulsion hydraulic system sudden change load energy absorption device Download PDFInfo
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- CN104214147B CN104214147B CN201410350624.6A CN201410350624A CN104214147B CN 104214147 B CN104214147 B CN 104214147B CN 201410350624 A CN201410350624 A CN 201410350624A CN 104214147 B CN104214147 B CN 104214147B
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Abstract
The present invention discloses a kind of shield propulsion hydraulic system sudden change load energy absorption device, comprises three position four-way directional control valve, bi-bit bi-pass reversing valve, two fluid-control one-way valves, sequence valve, surplus valve, energy storage, hydro-cylinders. This system adopts energy storage as energy absorption and storage unit, the peak hydraulic that sudden change load extraneous in shield driving process causes can be absorbed storage, return large discharge operating mode when moving back for propelling hydraulic cylinder fast in zero load and utilize. Due to the existence of this device, the pressure surge under propulsion system sudden change load working condition is effectively suppressed, and robust motion is effectively improved, and has obvious energy-saving effect simultaneously. The work of this device all adopts system liquid force feed to control, and shield driving electrical control system is simplified, and is applicable to very much the actual condition needs of shield excavation machine propulsion hydraulic system.
Description
Technical field
The invention belongs to hydraulic efficiency system technical field, it relates to a kind of hydrodynamicpressure controlling organization, it is specifically related to a kind of shield propulsion hydraulic system sudden change load energy absorption device.
Background technology
Propulsion system is the important component part of shield excavation machine. Owing to shield driving geological condition is complicated and changeable, the unpredictable workloads that thus propulsion system is born is very big, particularly easily suffers the big load of random mutation under extreme geological condition. The work of propulsion hydraulic system normal reliable is caused bigger impact by the pressure jump that sudden change load causes and energy accumulation.
Existing shield propulsion hydraulic system generally adopts surplus valve as System protection elements under sudden change load, and surplus valve needs frequent unlatching, and the rapidity of system response is difficult to be ensured, and spill losses causes more greatly system heat generation serious. In addition, not only being protected hydraulic efficiency system to bear safe pressure under sudden change load, after also being ensured safety valve unlatching, hydraulic cylinder works cavity pressure can not be reduced under normal operation pressure, stablizes to maintain excavation face.
Summary of the invention
It is an object of the invention to solve the problem, a kind of shield propulsion hydraulic system sudden change load energy absorption device is provided, this device can absorb driving sudden change load causes under complicated geological operating mode pressure surge and can store as hydraulic pressure, simultaneously again can reliably pressurize, maintenance excavation face is stable.
In order to realize above-mentioned purpose, the technical solution adopted in the present invention is: comprise three position four-way directional control valve, hydro-cylinder and energy storage; The oil-in of three position four-way directional control valve enters oil circuit with master and is connected, and oil return mouth is connected with oil return road, and the first oil outlet is connected with the rodless cavity of hydro-cylinder, and the rod chamber of the 2nd oil outlet hydro-cylinder is connected; By being also provided with for absorbing between the first oil outlet and the 2nd oil outlet to two oil circuits of hydro-cylinder and store the change hydraulic pressure energy of propulsion system under sudden change load working condition, the energy storage simultaneously out done work by fault offset when hydro-cylinder returns and moves back; First oil outlet is also connected with surplus valve.
Described the 2nd is also provided with bi-bit bi-pass reversing valve between oil outlet and hydro-cylinder; First oil outlet of three position four-way directional control valve is connected with the control oil mouth of the oil-in of the 2nd fluid-control one-way valve, bi-bit bi-pass reversing valve and the oil-in of surplus valve respectively; 2nd oil outlet of three position four-way directional control valve is connected with the oil-in of bi-bit bi-pass reversing valve with the control oil mouth of the first fluid-control one-way valve; The oil outlet of bi-bit bi-pass reversing valve is connected with the oily mouth of the control of the 2nd fluid-control one-way valve, the oil-in of the first fluid-control one-way valve and the rod chamber of hydro-cylinder respectively; The oil outlet of the 2nd fluid-control one-way valve is connected with the oil-in of sequence valve and the rodless cavity of hydro-cylinder respectively;
The oil outlet of described sequence valve is connected with the control oil mouth of surplus valve with energy storage after converging with the oil outlet of the first fluid-control one-way valve respectively; The oil outlet of surplus valve is connected on fuel tank.
Compared with prior art, the present invention has following useful effect:
The present invention adopt energy storage absorb and store propulsion system sudden change load working condition under change hydraulic pressure energy, when propelling hydraulic cylinder returns and moves back, fault offset is out done work, it is achieved energy-conservation. In addition, hydro-cylinder rod chamber and rodless cavity loop are provided with fluid-control one-way valve group, eliminate sudden change load to the impact of system working connection pressure, working chamber still can be kept to have certain pressure when suspending and advance simultaneously, and hydro-cylinder is reliably locked in original position. Finally, the work of shield propulsion hydraulic system of the present invention sudden change load energy absorption device all adopts hydraulic efficiency oil control, significantly decreases electric control element quantity, it is to increase the reliability of electrical control system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention.
Wherein: 1 is three position four-way directional control valve; 2 is bi-bit bi-pass reversing valve; 3 is surplus valve; 4,7 is fluid-control one-way valve; 5 is energy storage; 6 is sequence valve; 8 is hydro-cylinder; 9 is fuel tank.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
See Fig. 1, the present invention comprises three position four-way directional control valve 1, hydro-cylinder 8 and energy storage 5; The oil inlet P 1 of three position four-way directional control valve 1 is entered oil circuit with master and is connected, and oil return inlet T 1 is connected with oil return road, and the first oil outlet A1 is connected with the rodless cavity of hydro-cylinder 8, and the rod chamber of the 2nd oil outlet B1 hydro-cylinder 8 is connected; By being also provided with for absorbing between the first oil outlet A1 and the 2nd oil outlet B1 to two oil circuits of hydro-cylinder 8 and store the change hydraulic pressure energy of propulsion system under sudden change load working condition, the energy storage 5 simultaneously out done work by fault offset when hydro-cylinder returns and moves back; First oil outlet A1 is also connected with surplus valve 3. Bi-bit bi-pass reversing valve 2 also it is provided with between 2nd oil outlet B1 and hydro-cylinder 8; First oil outlet A1 of three position four-way directional control valve 1 is connected with the oil inlet P 3 of the oil-in A7 of the 2nd fluid-control one-way valve 7, the control oil mouth K2 of bi-bit bi-pass reversing valve 2 and surplus valve 3 respectively; 2nd oil outlet B1 of three position four-way directional control valve 1 is connected with the oil-in A2 of bi-bit bi-pass reversing valve 2 with the control oil mouth K4 of the first fluid-control one-way valve 4; The oil outlet B2 of bi-bit bi-pass reversing valve 2 is connected with the control of the 2nd fluid-control one-way valve 7 oily mouth K7, the oil-in A4 of the first fluid-control one-way valve 4 and the rod chamber of hydro-cylinder 8 respectively; The oil outlet B7 of the 2nd fluid-control one-way valve 7 is connected with the oil-in A6 of sequence valve 6 and the rodless cavity of hydro-cylinder 8 respectively; The oil outlet B6 of sequence valve 6 is connected with the control oil mouth K3 of surplus valve 3 with energy storage 5 after converging with the oil outlet B4 of the first fluid-control one-way valve 4 respectively; The oil outlet T3 of surplus valve 3 is connected on fuel tank 9.
The principle of work of the present invention is as follows:
As shown in drawings, when shield structure is pushed ahead, three position four-way directional control valve 1 left side electro-magnet obtains electric, it is operated in left position, master enters oil path high-pressure oil and flow to the 2nd fluid-control one-way valve 7 oil-in A7 through oil inlet P 1, the first oil outlet A1 of three position four-way directional control valve 1, due to the 2nd fluid-control one-way valve 7 conducting, pressure oil promotes piston rod to stretch out through oil outlet B7 to hydro-cylinder 8 rodless cavity, and hydro-cylinder 8 rod chamber hydraulic efficiency oil flow to bi-bit bi-pass reversing valve 2 oil outlet B2 by pipeline. It is connected owing to three position four-way directional control valve 1 first oil outlet A1 controls oil mouth K2 with bi-bit bi-pass reversing valve 2, under the high-pressure oil effect from three position four-way directional control valve 1 first oil outlet A1, bi-bit bi-pass reversing valve 2 is operated in left position, oil-in A2 is connected with oil outlet B2, and hydro-cylinder 8 rod chamber hydraulic efficiency oil flow to three position four-way directional control valve 1 the 2nd oil outlet B1 through bi-bit bi-pass reversing valve 2. Owing to three position four-way directional control valve 1 is operated in left position, hydro-cylinder 8 rod chamber hydraulic efficiency oil flows into through bi-bit bi-pass reversing valve 2 to three position four-way directional control valve 1 the 2nd oil outlet B1, and T1 mouth flows out to oil return road.
When normally advancing, hydro-cylinder 8 rodless cavity pressure oil flow to sequence valve 6 oil-in A6, and owing to operating pressure is lower than sequence valve 6 spring set pressure, sequence valve 6 does not work, and oil-in A6 and oil outlet B6 is obstructed. Being connected with oil return road owing to the first fluid-control one-way valve 4 controls oil mouth K4, and have high-pressure oil in energy storage 5, now the first fluid-control one-way valve 4 oil-in A4 and oil outlet B4 is obstructed. The control oil mouth K7 of the 2nd fluid-control one-way valve 7 is connected with oil return road, and therefore the 2nd fluid-control one-way valve 7 can not reverse-conducting. Oil liquid pressure in energy storage 5 does not reach setting safe pressure value, and therefore connected surplus valve 3 controls oil mouth K3 and do not reach the pressure that valve is opened, and oil inlet P 3 and oil outlet T3 are obstructed, and surplus valve 3 does not work.
When shield driving meets with sudden change load, system working pressure increases. When pressure exceedes sequence valve 6 set pressure, sequence valve 6 is opened, and oil-in A6 is connected with oil outlet B6. The high-pressure oil part flowed out from the 2nd fluid-control one-way valve 7 oil outlet B7 enters energy storage 5 by sequence valve 6 oil-in A6, oil outlet B6, starts to fill liquid. When load of suddenling change makes more greatly energy storage 5 supercharging pressure higher than setting safety value, energy storage 5 mesohigh oil controls oil mouth K3 effect by surplus valve 3 makes surplus valve 3 open, oil inlet P 3 is connected with oil outlet T3, and the high-pressure oil from three position four-way directional control valve 1 first oil outlet A1 flows back to fuel tank 9 through surplus valve 3 oil inlet P 3, oil outlet T3. In extreme circumstances, when hydro-cylinder 8 rodless cavity pressure rises to far above system pressure, being connected with oil return road owing to the 2nd fluid-control one-way valve 7 controls oil mouth K7, the 2nd fluid-control one-way valve 7 oppositely ends, and prevents pressure surge to the impact of working connection.
When shield driving hydro-cylinder needs back to move back, on the right of three position four-way directional control valve 1, electro-magnet obtains electric, it is operated in right position, master enters the oily oil inlet P 1 through three position four-way directional control valve 1 of oil path high-pressure, the 2nd oil outlet B1, a part to the first fluid-control one-way valve 4 controls oil mouth K4, by the first fluid-control one-way valve 4 reverse-conducting, the high-pressure oil in energy storage 5 flow to hydro-cylinder 8 rod chamber through the first fluid-control one-way valve 4 oil outlet B4, oil-in A4 and promotes piston rod to retract. Owing to three position four-way directional control valve 1 is operated in right position, first oil outlet A1 is connected with oil return inlet T 1, bi-bit bi-pass reversing valve 2 controls oil mouth K2 and oil return road is connected, under right-hand member spring power effect, bi-bit bi-pass reversing valve 2 is operated in right position, another part hydraulic efficiency oil of three position four-way directional control valve 1 the 2nd oil outlet B1 flows to hydro-cylinder 8 rod chamber through bi-bit bi-pass reversing valve 2 oil-in A2, oil outlet B2, jointly promotes hydro-cylinder to return fast with energy storage and moves back. Owing to bi-bit bi-pass reversing valve 2 has built-in check valve, can prevent energy storage 5 mesohigh oil from flowing back to working connection. It is connected owing to working connection controls oil mouth K7 through bi-bit bi-pass reversing valve 2 oil-in A2, oil outlet B2 with the 2nd fluid-control one-way valve 7,2nd fluid-control one-way valve 7 reverse-conducting, hydro-cylinder 8 rodless cavity hydraulic efficiency oil flow to oil return road through the 2nd fluid-control one-way valve 7 oil outlet B7, oil-in A7 and three position four-way directional control valve 1 first oil outlet A1, oil return inlet T 1, thus realizes hydro-cylinder and return and move back. Now, sequence valve 6 oil-in A6, surplus valve 3 oil inlet P 3 are all connected with oil return road, therefore sequence valve 6 and surplus valve 3 all do not work.
When shield structure suspend advance time, three position four-way directional control valve 1 all electro-magnet power-off, valve is operated in middle position, and oil inlet P 1 and the first oil outlet A1 and the 2nd oil outlet B1 disconnect, working connection pressure oil through oil inlet P 1, oil return inlet T 1 to oil return road, system unloaded. Owing to now bi-bit bi-pass reversing valve 2 works in right position, jointly form hydraulic lock with the 2nd fluid-control one-way valve 7, thus make hydro-cylinder 8 locking position, ensure the stable of excavation face.
Above content is only the technological thought that the present invention is described; protection scope of the present invention can not be limited with this; every technological thought proposed according to the present invention, any change done on technical scheme basis, all falls within the protection domain of claims of the present invention.
Claims (2)
1. a shield propulsion hydraulic system sudden change load energy absorption device, it is characterised in that: comprise three position four-way directional control valve (1), hydro-cylinder (8) and energy storage (5); The oil-in (P1) of three position four-way directional control valve (1) enters oil circuit with master and is connected, oil return mouth (T1) is connected with oil return road, first oil outlet (A1) is connected with the rodless cavity of hydro-cylinder (8), and the 2nd oil outlet (B1) is connected with the rod chamber of hydro-cylinder (8); By being also provided with for absorbing between the first oil outlet (A1) and the 2nd oil outlet (B1) to two oil circuits of hydro-cylinder (8) and store the change hydraulic pressure energy of propulsion system under sudden change load working condition, the energy storage (5) simultaneously out done work by fault offset when hydro-cylinder returns and moves back; First oil outlet (A1) is also connected with surplus valve (3);
Bi-bit bi-pass reversing valve (2) also it is provided with between the 2nd described oil outlet (B1) and hydro-cylinder (8); First oil outlet (A1) of three position four-way directional control valve (1) is connected with control oil mouth (K2) of the oil-in (A7) of the 2nd fluid-control one-way valve (7), bi-bit bi-pass reversing valve (2) and the oil-in (P3) of surplus valve (3) respectively; 2nd oil outlet (B1) of three position four-way directional control valve (1) is connected with the oil-in (A2) of bi-bit bi-pass reversing valve (2) with control oil mouth (K4) of the first fluid-control one-way valve (4); The oil outlet (B2) of bi-bit bi-pass reversing valve (2) is connected with the oily mouth (K7) of the control of the 2nd fluid-control one-way valve (7), the oil-in (A4) of the first fluid-control one-way valve (4) and the rod chamber of hydro-cylinder (8) respectively; The oil outlet (B7) of the 2nd fluid-control one-way valve (7) is connected with the oil-in (A6) of sequence valve (6) and the rodless cavity of hydro-cylinder (8) respectively.
2. shield propulsion hydraulic system according to claim 1 sudden change load energy absorption device, it is characterised in that: the oil outlet (B6) of described sequence valve (6) is connected with control oil mouth (K3) of surplus valve (3) with energy storage (5) after converging with the oil outlet (B4) of the first fluid-control one-way valve (4) respectively; The oil outlet (T3) of surplus valve (3) is connected on fuel tank (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410350624.6A CN104214147B (en) | 2014-07-22 | 2014-07-22 | A kind of shield propulsion hydraulic system sudden change load energy absorption device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410350624.6A CN104214147B (en) | 2014-07-22 | 2014-07-22 | A kind of shield propulsion hydraulic system sudden change load energy absorption device |
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| CN104214147A CN104214147A (en) | 2014-12-17 |
| CN104214147B true CN104214147B (en) | 2016-06-01 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106015126B (en) * | 2016-05-31 | 2018-01-30 | 中国航空工业集团公司西安飞机设计研究所 | A kind of device for driving hydraulic cylinder quick acting |
| CN106438591B (en) * | 2016-08-26 | 2017-10-27 | 辽宁三三工业有限公司 | The high-precision propulsion hydraulic system of balancing earth-pressure shielding machine ratio control and control method |
| CN108953252A (en) * | 2018-09-18 | 2018-12-07 | 宁波联城住工科技有限公司 | Hydraulic cylinder response circuit, fabric construction and material distributing machine system |
| CN109812461B (en) * | 2019-03-29 | 2024-01-19 | 中铁工程装备集团有限公司 | Split type shield tunneling machine hydraulic propulsion control valve group convenient to assemble and control method thereof |
| CN111795016B (en) * | 2020-04-30 | 2022-08-12 | 武汉船用机械有限责任公司 | Hydraulic system for controlling oil cylinder |
| CN111576537A (en) * | 2020-05-29 | 2020-08-25 | 徐州徐工挖掘机械有限公司 | Hydraulic lifting system of excavator cab and excavator |
| CN111776157B (en) * | 2020-05-29 | 2021-12-28 | 武汉船用机械有限责任公司 | Small ship vibration damping system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH04102704A (en) * | 1990-08-20 | 1992-04-03 | Teisaku:Kk | Pulsation device for hydraulic cylinder |
| JP4674047B2 (en) * | 2004-02-18 | 2011-04-20 | 日立建機株式会社 | Gripping force control device and demolition work machine |
| CN101550830B (en) * | 2009-05-18 | 2012-08-29 | 浙江大学 | Energy-efficient shield cutterhead closed loop hydraulic control system adopting ganged accumulators |
| CN102305222B (en) * | 2011-08-24 | 2014-03-26 | 天津大学 | Electro-hydraulic variable valve device with energy accumulator buffer function and energy storage method thereof |
| DE102012000045B3 (en) * | 2012-01-03 | 2013-03-28 | Hydac System Gmbh | Device for controlling a fluid-actuated actuator in a working equipment |
| CN203214462U (en) * | 2013-03-28 | 2013-09-25 | 三一汽车制造有限公司 | Mixing truck and hydraulic system thereof |
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Granted publication date: 20160601 Termination date: 20190722 |